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Additional recommended knowledge
It is often chosen to be used in titrations because of its clear colour change. Because it changes colour at the pH of a mid-strength acid, it is usually used in titrations for acids. Unlike a universal indicator, methyl orange does not have a full spectrum of colour change, but has a sharper end point.
In a solution becoming less acidic, methyl orange moves from red to orange and finally to yellow with the reverse occurring for a solution increasing in acidity. It should be noted that the entire colour change occurs in acidic conditions.
In an acid it is reddish and in alkali it is yellow.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Methyl_orange". A list of authors is available in Wikipedia.|